Vulnerability Name:

CVE-2020-3482 (CCN-191987)

Assigned:2019-12-12
Published:2020-11-18
Updated:2020-12-02
Summary:A vulnerability in the Traversal Using Relays around NAT (TURN) server component of Cisco Expressway software could allow an unauthenticated, remote attacker to bypass security controls and send network traffic to restricted destinations. The vulnerability is due to improper validation of specific connection information by the TURN server within the affected software. An attacker could exploit this issue by sending specially crafted network traffic to the affected software. A successful exploit could allow the attacker to send traffic through the affected software to destinations beyond the application, possibly allowing the attacker to gain unauthorized network access.
CVSS v3 Severity:6.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
5.7 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
6.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)
5.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:6.4 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
6.4 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-269
Vulnerability Consequences:Obtain Information
References:Source: MITRE
Type: CNA
CVE-2020-3482

Source: XF
Type: UNKNOWN
cisco-cve20203482-info-disc(191987)

Source: CCN
Type: Cisco Security Advisory cisco-sa-Expressway-8J3yZ7hV
Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability

Source: CISCO
Type: Vendor Advisory
20201118 Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:expressway:*:*:*:*:*:*:*:* (Version < x12.6.3)
  • OR cpe:/a:cisco:telepresence_video_communication_server:*:*:*:*:*:*:*:* (Version < x12.6.3)

    • Configuration CCN 1:
  • cpe:/a:cisco:expressway:*:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco expressway *
    cisco telepresence video communication server *
    cisco expressway *